Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong ban tre snippets" » "cong bang tre snippets", "cong san tre snippets", "cong tan tre snippets", "cong ben tre snippets", "cong ban tro snippets", "cong benh tre snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cong ban tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong ban tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong ban tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong ban tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.